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Area of ​​a triangle using Heron's formula

calculator calculates the area of ​​a triangle after a length of three sides.                


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Weighted average ratings

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Conversion between number bases

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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Calculator for calculating the volume of a cylinder

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The calculator calculates the volume of a cylinder with using of height and area.
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Verifier numbers EAN-13 preview

 Verifier numbers EAN-13 Calculator allows you to verify the number entered EAN-13.          
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Number of square-triangle has the properties of a square and a triangular number.          
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Calculate how long you go on foot

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Settlement km - calculator, model in Poland

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Calculator allows you to calculate the costs that can be refunded for use of a personal vehicle for business purposes.